OFFSET
1,2
COMMENTS
Column 3 of A202988
LINKS
R. H. Hardin, Table of n, a(n) for n = 1..210
FORMULA
Empirical: a(n) = 27*a(n-1) -271*a(n-2) +1899*a(n-3) -11048*a(n-4) +44346*a(n-5) -113218*a(n-6) +201165*a(n-7) -291398*a(n-8) +360023*a(n-9) -334000*a(n-10) +199528*a(n-11) -66264*a(n-12) +9212*a(n-13)
EXAMPLE
Some solutions for n=4
..1..1..0....0..0..0....0..1..0....2..2..2....2..2..2....0..2..1....0..1..1
..2..2..0....2..1..0....2..1..1....2..2..2....0..2..2....2..2..2....1..1..1
..0..2..0....2..2..0....2..2..0....1..0..1....0..1..2....2..2..2....0..1..1
..2..2..2....1..1..2....0..1..0....1..1..0....0..0..0....1..1..1....0..1..1
CROSSREFS
KEYWORD
nonn
AUTHOR
R. H. Hardin Dec 26 2011
STATUS
approved